Home / 39,341.11-54,289.20-21,436.25

Finding the Fourth Proportional to 39,341.11, 54,289.20 and 21,436.25

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Solution

The fourth proportional to 39,341.11, 54,289.20 and 21,436.25 is: 29,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,341.11 : 54,289.20 = 21,436.25 : x
  2. Step 2: Convert to fraction form
    39,341.11/54,289.20 = 21,436.25/x
  3. Step 3: Cross multiply
    39,341.11x = 54,289.20 × 21,436.25
  4. Step 4: Simplify right side
    39,341.11x = 1,163,756,863.50
  5. Step 5: Solve for x
    x = 1,163,756,863.50/39,341.11
  6. Step 6: Final answer
    x = 29,581.19

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.